matiex | 6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398

General

Target

6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe
Size

739KB
MD5

624696762a64d45cd7153d038fe1aef6
SHA1

62a3b3b5e4de3d434356ad2ec83635efc8515f1e
SHA256

6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398
SHA512

dca4a77720170b23fa43f1c80920b3d5cca85d5a2a26f59c6cd26efc99f73f499166ced4ea8037db92ff427a7ea1a5ca8bf9f6c5bef26d83462b44fde10b741d

Score

10^/10

matiex collection keylogger spyware stealer

Malware Config

Extracted

Family

matiex

Credentials

Protocol: smtp
Host:
ebop.website
Port:
587
Username:
[email protected]
Password:
P@ssw0rdP@ssw0rd

Signatures

Matiex
Matiex is a keylogger and infostealer first seen in July 2020.
stealer keylogger matiex

Matiex Main Payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1636-60-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex

Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

3 checkip.dyndns.org

flow	ioc
3	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

Processes:

6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe

description	pid	process	target process
PID 748 set thread context of 1636	748	6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe	RegAsm.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe

pid process

748 6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description pid process

Token: SeDebugPrivilege 1636 RegAsm.exe

pid	process
748	6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe

description	pid	process
Token: SeDebugPrivilege	1636	RegAsm.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe

description	pid	process	target process
PID 748 wrote to memory of 1636	748	6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe	RegAsm.exe
PID 748 wrote to memory of 1636	748	6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe	RegAsm.exe
PID 748 wrote to memory of 1636	748	6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe	RegAsm.exe
PID 748 wrote to memory of 1636	748	6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe	RegAsm.exe
PID 748 wrote to memory of 1636	748	6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe	RegAsm.exe
PID 748 wrote to memory of 1636	748	6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe	RegAsm.exe
PID 748 wrote to memory of 1636	748	6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe	RegAsm.exe
PID 748 wrote to memory of 1636	748	6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe	RegAsm.exe

outlook_office_path 1 IoCs

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe
"C:\Users\Admin\AppData\Local\Temp\6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:748

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1636

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/748-54-0x0000000000CD0000-0x0000000000D90000-memory.dmp

Filesize
768KB

Download
memory/748-55-0x0000000005000000-0x000000000507A000-memory.dmp

Filesize
488KB

Download
memory/748-56-0x00000000763E1000-0x00000000763E3000-memory.dmp

Filesize
8KB

Download
memory/748-57-0x0000000000580000-0x0000000000583000-memory.dmp

Filesize
12KB

Download
memory/1636-58-0x000000000046CE6E-mapping.dmp

Download
memory/1636-60-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads